Question
If \( x=5 \), evaluate the value of this expression: \[ x^{2}+8 x-12 \]
Ask by Zimmerman Cross. in South Africa
Mar 15,2025
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Answer
When \( x=5 \), the expression \( x^{2}+8x-12 \) equals 53.
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The Deep Dive
Let's plug in the value of \( x = 5 \) into the expression \( x^{2}+8x-12 \). First, we calculate \( x^{2} \): \[ 5^{2} = 25 \] Next, calculate \( 8x \): \[ 8 \times 5 = 40 \] Now, substituting these values back into the expression: \[ 25 + 40 - 12 \] Now, do the addition and subtraction: \[ 25 + 40 = 65 \] \[ 65 - 12 = 53 \] Therefore, the value of the expression when \( x = 5 \) is \( \boxed{53} \).